Debian : USB scanner Colorado 9600

[sosco@iol.it]

Salve ML,
Ho seguito alla lettera il Linux USB-HOW TO,quando lancio xsane ricevo
il mex "no devices found".
Se leggo il file /proc/bus/usb/devices vedo però che i device USB
vengono riconosciuti.
Di seguito riporto la partedi dmesg riguardante l'USB
Scusate per la lunghezza ma spero che qualcuno possa illuminarmi
Grazie
verbal

usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
..................
usb.c: registered new driver usbscanner
scanner.c: USB Scanner support registered.
PCI: Found IRQ 11 for device 00:02.0
PCI: Setting latency timer of device 00:02.0 to 64
usb-ohci.c: USB OHCI at membase 0xd2856000, IRQ 11
usb-ohci.c: usb-00:02.0, Acer Laboratories Inc. [ALi] M5237 USB
usb.c: new USB bus registered, assigned bus number 1
usb.c: kmalloc IF cd652d80, numif 1
usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
usb.c: USB device number 1 default language ID 0x0
Product: USB OHCI Root Hub
SerialNumber: d2856000
hub.c: USB hub found
hub.c: 2 ports detected
hub.c: standalone hub
hub.c: ganged power switching
hub.c: global over-current protection
hub.c: power on to power good time: 2ms
hub.c: hub controller current requirement: 0mA
hub.c: port removable status: RR
hub.c: local power source is good
hub.c: no over-current condition exists
hub.c: enabling power on all ports
usb.c: hub driver claimed interface cd652d80
usb.c: kusbd: /sbin/hotplug add 1
usb.c: kusbd policy returned 0xfffffffe
hub.c: port 2 connection change
hub.c: port 2, portstatus 101, change 1, 12 Mb/s
hub.c: port 2, portstatus 103, change 10, 12 Mb/s
hub.c: USB new device connect on bus1/2, assigned device number 2
usb.c: kmalloc IF cd652e40, numif 1
usb.c: new device strings: Mfr=1, Product=2, SerialNumber=0
usb.c: USB device number 2 default language ID 0x409
Manufacturer: PRIMAX
Product: Colorado USB 9600
scanner.c: probe_scanner: Undetected endpoint. Notify the maintainer.
usb.c: unhandled interfaces on device
usb.c: USB device 2 (vend/prod 0x461/0x340) is not claimed by any
active driver.
  Length              = 18
  DescriptorType      = 01
  USB version         = 1.00
  Vendor:Product      = 0461:0340
  MaxPacketSize0      = 64
  NumConfigurations   = 1
  Device version      = 1.01
  Device Class:SubClass:Protocol = ff:00:ff
    Vendor class
Configuration:
  bLength             =    9
  bDescriptorType     =   02
  wTotalLength        = 0027
  bNumInterfaces      =   01
  bConfigurationValue =   01
  iConfiguration      =   00
  bmAttributes        =   40
  MaxPower            =  100mA

  Interface: 0
  Alternate Setting:  0
    bLength             =    9
    bDescriptorType     =   04
    bInterfaceNumber    =   00
    bAlternateSetting   =   00
    bNumEndpoints       =   03
    bInterface Class:SubClass:Protocol =   ff:00:ff
    iInterface          =   00
    Endpoint:
      bLength             =    7
      bDescriptorType     =   05
      bEndpointAddress    =   01 (out)
      bmAttributes        =   02 (Bulk)
      wMaxPacketSize      = 0040
      bInterval           =   00
    Endpoint:
      bLength             =    7
      bDescriptorType     =   05
      bEndpointAddress    =   82 (in)
      bmAttributes        =   02 (Bulk)
      wMaxPacketSize      = 0040
      bInterval           =   00
    Endpoint:
      bLength             =    7
      bDescriptorType     =   05
      bEndpointAddress    =   83 (in)
      bmAttributes        =   02 (Bulk)
      wMaxPacketSize      = 0040
      bInterval           =   00
usb.c: kusbd: /sbin/hotplug add 2
usb.c: kusbd policy returned 0xfffffffe
usb.c: deregistering driver usbscanner
usb.c: registered new driver usbscanner
scanner.c: probe_scanner: User specified USB scanner -- Vendor:Product -
 131:e0
scanner.c: probe_scanner: Undetected endpoint. Notify the maintainer.
scanner.c: USB Scanner support registered.
VFS: Disk change detected on device fd(2,0)